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ACP | Articles | Volume 19, issue 21
Atmos. Chem. Phys., 19, 13383–13407, 2019
https://doi.org/10.5194/acp-19-13383-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Atmos. Chem. Phys., 19, 13383–13407, 2019
https://doi.org/10.5194/acp-19-13383-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 30 Oct 2019

Research article | 30 Oct 2019

Relative-humidity-dependent organic aerosol thermodynamics via an efficient reduced-complexity model

Kyle Gorkowski et al.

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Boender, C. G. E., Kan, A. H. G. R., Timmer, G. T., and Stougie, L.: A stochastic method for global optimization, Math. Program., 22, 125–140, https://doi.org/10.1007/BF01581033, 1982. a
Brege, M., Paglione, M., Gilardoni, S., Decesari, S., Cristina Facchini, M., and Mazzoleni, L. R.: Molecular insights on aging and aqueous-phase processing from ambient biomass burning emissions-influenced Po Valley fog and aerosol, Atmos. Chem. Phys., 18, 13197–13214, https://doi.org/10.5194/acp-18-13197-2018, 2018. a
Broekhuizen, K., Kumar, P. P., and Abbatt, J. P.: Partially soluble organics as cloud condensation nuclei: Role of trace soluble and surface active species, Geophys. Res. Lett., 31, 1–5, https://doi.org/10.1029/2003GL018203, 2004. a, b
Brooks, S. D., DeMott, P. J., and Kreidenweis, S. M.: Water uptake by particles containing humic materials and mixtures of humic materials with ammonium sulfate, Atmos. Environ., 38, 1859–1868, https://doi.org/10.1016/j.atmosenv.2004.01.009, 2004. a, b
Buajarern, J., Mitchem, L., and Reid, J. P.: Characterizing Multiphase Organic/Inorganic/Aqueous Aerosol Droplets, J. Phys. Chem. A, 111, 9054–9061, https://doi.org/10.1021/jp074366a, 2007. a
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We present the new Binary Activity Thermodynamics (BAT) model, which is a water-sensitive reduced-complexity organic aerosol thermodynamics model. It can use bulk properties like O : C, molar mass, and RH to predict organic activity coefficients and water uptake behavior. We show applications in RH-dependent organic co-condensation, liquid–liquid phase separation, and Kohler curve predictions, and we validate the BAT model against laboratory measurements.
We present the new Binary Activity Thermodynamics (BAT) model, which is a water-sensitive...
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